Table 2.

Health and Disease Characteristics of the Sample

	Combined Sample (n = 526)	Tertiary Care (n = 402)	Public Hospital (n = 124)	P Value for Comparison
Variable	M (SD)	M (SD)	M (SD)
Body Mass Index	27.1 (6.6)	26.7 (6.0)	28.6 (8.2)	0.02
Number of Comorbid Conditions	1.7 (1.1)	1.6 (1.1)	2.1 (1.1)	<0.001
Pack-Years	53.7 (30.7)	54.3 (29.0)	51.6 (36.2)	0.41
Number of Years had COPD	6.3 (5.2)	6.4 (5.3)	6.0 (4.9)	0.46
Number of Medications for COPD	3.3 (1.9)	3.3 (2.0)	3.1 (1.7)	0.28
Variable	N (%)	N (%)	N (%)
Using oxygen for COPD				0.04
No	184 (35.6)	131 (33.2)	53 (43.4)
Yes	333 (64.4)	264 (66.8)	69 (56.6)